Presidential candidate Rick Santorum says the race for the Republican nomination is not over yet.

The former Pennsylvania senator wrapped up a full day of campaigning in Pennsylvania by bowling a few frames at the Trindle Bowl in Hampden Township Wednesday night, a day after losing primaries in Maryland, Wisconsin and the District of Columbia to rival Mitt Romney.

While Romney is well ahead in delegates, Santorum insisted the race is still wide open.

“I just don't believe the math,” he told abc27 News. “We have a lot of uncommitted delegates who are pledged to Romney, but they are not committed to Romney so they can change their mind. This is still a very wide open race. Only half of the delegates have been selected.”

If he loses his home state in the April 24 primary, will Santorum drop out of the race?

“Everybody says 'if you lose Pennsylvania.' I'm going to win Pennsylvania,” he said. “We're going to win Pennsylvania and we're not going to get out of the race.”

Santorum also predicted wins in upcoming primaries and appeared confident the odds will work in his favor.

“We win Pennsylvania, we win Texas, maybe in the meantime Congressman Gingrich decides to throw in with us, he's got about 200 delegates, all of a sudden this is a horse race,” he said.

When asked if he would consider an offer to run as Romney's running mate, Santorum's answer short and to the point.